21 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Koscielski, Janusz | Becker, Michael | 1/2-1/2 | B22 | Round 8: Koscielski, Janusz - Becker, Michael | 2024-08-30 |
| Koscielski, Janusz | Lindam, Ingo | 1-0 | B22 | Round 4: Koscielski, Janusz - Lindam, Ingo | 2024-08-26 |
| Koscielski, Janusz | Stern, Geoffrey | 1-0 | C04 | Round 1: Koscielski, Janusz - Stern, Geoffrey | 2024-08-23 |
| Koscielski, Janusz | Metz, Hartmut | 1/2-1/2 | C06 | Round 6: Koscielski, Janusz - Metz, Hartmut | 2024-08-23 |
| Koscielski, Janusz | Haydon, David L | 0-1 | B18 | ebrcc2022 | 2022-12-16 |
| Koscielski, Janusz | Kacprzak, Karol | 0-1 | B22 | Katowice | 2022-12-16 |
| Janusz Koscielski | Matthias Willsch | * | C08 | Round 7: Janusz Koscielski - Matthias Willsch | 2022-08-18 |
| Janusz Koscielski | Peter Wacker | 1/2-1/2 | C48 | Round 5: Janusz Koscielski - Peter Wacker | 2022-08-16 |
| Janusz Koscielski | Hauke, Dr. Reddmann | 1/2-1/2 | B22 | Round 3: Janusz Koscielski - Hauke, Dr. Reddmann | 2022-08-14 |
| Koscielski, Janusz | Noack, Mario | 1-0 | B13 | 50+ German Senior Championship | 2022-08-12 |